30-05-2012, 10:37 AM
Hydrogeochemical analysis
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Introduction
Hydrogeochemical analysis of the groundwater of the taluk confluencing with the river
Kabini in Nanjangud taluk of Mysore distract, Karnataka state has been now been attempted
studying the controlling mechanism. Nanjangud taluk lies on SouthEastern
parts of Mysore
District and forms almost a plain boundary except for a few isolated hillocks to the south and
west. These hills rise 600 to 700 feet above the general level of the boundary, which is at an
elevation of 2400 feet above MSL. The highest peak lying on the South–Western corner of
the taluk is 3108 AMSL.
Aim and Objectives
The present study has been adopted for the following objectives
· To Study of chemical composition of groundwater is a measure of its suitability as a
source of water for human and animal consumption.
· To evaluate the suitability of water for domestic, industrial and irrigational purposes.
· To demarcate the various thematic maps and are prepared to illustrate the spatial
distribution of groundwater in the taluk.
Study area
Its is bounded between North latitude 11 o 5΄ 30” and12 o 12’30’’ East longitude 76 o 22΄30” to
76 o 56΄30’’ Toposheets Numbers are 57 D/12, 57D/16,58A/5,58A/9,58A/13 Provides the
physiographic coverage of the study area (Fg.1).Total extent of the study area is 981.60 sq.
km covering parts or whole of 184 villages falling in Nanjangud taluk.
Geology and soil
The Nanjangud taluk covers crystalline rocks and high grade supracrustal rocks occurring as
huge enclaves within gneisses of different ages, which include quartzitepelitecarbonate
association along with banded iron formations, manganiferous horizons and amphibolites
(having dip 60 0 & strike N65 0 E). The components of ultramafic and basic rocks were
emplaced in to the supracrustals and were invaded by large scale acid igneous rock.
Nanjangud band is 8 km long, half km wide NE trending linear band extending from 3 km
NNW of Nanjangud. Lithologically the belt consists of garnet pyribolites with lenses of
calcyphire and crystalline limestone.
Methodology
Information on the quality of groundwater is an important aspect any hydrological
investigation. The chemical composition of groundwater is a measure of its suitability as a
source of water for human and animal consumption, irrigation and for industrial purpose.